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Can not get the input noise plotted, IC6.14, MMSIM 10

Kabal

Hello, Im running analysis of some circuit, i do AC, and a noise analysis, in the noise analysis. Im using ADE XL.

 In noise analysis options i specified input, output, and then plotted the VN(), now i can see the noise spectral density.

 But what i can not get is to have the input noise plotted. For example, circuit consists of one MOSFET and few resistors, all resistors are selected to generate noise. And i can go to ADE XL->Results Browser, and then go to noise-noise, and then click on any individual resistor, and see its bandwidth and noise.

 But that is just for specific resistor, now how can i get same thing done but for the input part only?

 

 

  •  Well im looking through the docs and different sources, still cant figure out if there is any way to plot the input noise!

    Again, when i go to ADE XL results browser, i can click on any resistor, and see the noise magnitude and bandwidth. 

    Now, all i want is to have same type of graph for the INPUT part of the circuit, in other words for the node at which the noisy voltage source is connected.

     

    I tried to do some trick, like setting that input node as an output, but that did not work either. Any ideas?

     

    or lets put it this way: I want to plot the noise which i choose to generate for specific voltage source, is there any to do that?

  • Provided that you set up the "input source" in the noise analysis (on the choose analysis form), you can then either use the VNIN() function to plot the input-referred noise, or go to the results browser and plot "in" from the noise results.

    BTW, you don't have to do an AC and a noise analysis - noise alone is sufficient (that's not true in all simulators). Of course, you may wish to be running ac analysis for other reasons...

    Kind Regards,

    Andrew

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